Chapter 11, Problem 39E

The rate of the reaction

${\text{NO}}_{\text{2}}\left(g\right)+\text{CO}\left(g\right)\to \text{NO}\left(g\right)+{\text{CO}}_{\text{2}}\left(g\right)$

depends only on the concentration of nitrogen dioxide below 225°C. At a temperature below 225°C, the following data were collected:

Time(s)	[NO2](mol/L)
0	0.500
1.20 × 103	0.444
3.00 × 103	0.381
4.50 × 103	0.340
9.00 × 103	0.250
1.80 × 104	0.174

Determine the rate law, the integrated rate law, and the value of the rate constant. Calculate [NO₂] at 2.70 × 10⁴ s after the start of the reaction.